Mailarrow vs MailRush.io: Cold Email Platform Comparison
Compare Mailarrow and MailRush.io side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
Mailarrow starts at $39/mo with unlimited email warmup, unlimited mailboxes, and 5 integrations including Gmail and Outlook. MailRush.io starts at $19/mo with unlimited senders, unlimited email warming, and 4 integrations including SMTP and IMAP. Both top out at $99/mo, so the right pick depends on budget, feature needs, and integration priorities.
Key takeaways
- Mailarrow's entry plan costs $39/mo for 2,000 active prospects and 6,000 emails, while MailRush.io's Starter plan costs $19/mo for up to 1,000 contacts and 5,000 emails per month.
- Both platforms have a top-tier plan priced at $99/mo, with Mailarrow's Growth plan covering 50,000 active prospects and MailRush.io's Scale plan covering up to 50,000 contacts.
- Mailarrow lists 10 features including AI personalization and sending mailbox rotation, while MailRush.io lists 11 features including email validation and spam assessment.
- Mailarrow integrates with 5 tools including Gmail, Outlook, Zoho, and TrulyInbox, while MailRush.io integrates with 4 tools including SMTP, IMAP, and Webhooks.
- Zapier is the only integration shared between Mailarrow and MailRush.io.
Reviewed and updated September 2, 2026
Mailarrow vs MailRush.io: Cold Email Platform Comparison
Mailarrow and MailRush.io are both cold email platforms. Choosing between them depends on your team size, budget, and specific cold email outreach requirements. Here is what each vendor publishes about pricing, features, and integrations.
The Quick Answer
By each vendor's own wording, Mailarrow lists unlimited email warmup and unlimited mailboxes, while MailRush.io lists unlimited senders and unlimited email warming. A capability both offer can appear under different names, so read both feature lists below.
MailRush.io offers a lower entry point at $19/mo compared to Mailarrow at $39/mo.
If your priority is sending campaigns that land in the inbox and generate replies, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
Mailarrow is Cold email outreach software with email warmup, AI personalization, unlimited sequences and unlimited connected mailboxes. Users bring their own mailboxes and prospect lists; Mailarrow does not sell leads or provide inboxes.
MailRush.io is Cold email software that automates outreach and multi-step follow-ups from your own SMTP/IMAP mailboxes or MailRush-provided sending accounts. Email warmup and email validation are included in every plan.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Basic
Starter
Mailarrow Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Basic | $39/mo | 2,000 active prospects | 6,000 emails |
| Professional | $59/mo | 20,000 active prospects | 60,000 emails |
| Growth | $99/mo | 50,000 active prospects | 150,000 emails |
Source: Mailarrow Pricing
MailRush.io Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $19/mo | Up to 1,000 contacts | Up to 5,000 emails per month; up to 1,000 emails per day |
| Pro | $39/mo | Up to 30,000 contacts | Up to 10,000 emails per month; up to 1,500 emails per day |
| Scale | $99/mo | Up to 50,000 contacts | Up to 25,000 emails per month; up to 3,000 emails per day |
Source: MailRush.io Pricing
Pricing Analysis
MailRush.io offers the lower entry point ($19/mo vs $39/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Features Breakdown
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- and 4 more listed below
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- and 5 more listed below
Mailarrow Key Features
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- Custom properties
- Sending schedules
- Advanced tracking
- Reply tracking
MailRush.io Key Features
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- Email follow-ups
- Suppression list
- Email copy spam assessment
- Email personalization
- Unsubscription automation
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by Mailarrow
- Unlimited Email Warmup
- Unlimited Mailboxes
- AI Personalization
- Sending mailbox rotation
- Detailed campaign analytics
- Bulk Prospects Import
- Custom properties
- Sending schedules
- Advanced tracking
- Reply tracking
Listed only by MailRush.io
- Unlimited senders
- Unlimited email warming
- Email validation
- API access & Webhooks
- Zapier integrations
- Spintax support
- Email follow-ups
- Suppression list
- Email copy spam assessment
- Email personalization
- Unsubscription automation
Integration Ecosystem
Mailarrow Integrations
Mailarrow connects with: Gmail, Outlook, Zoho, Zapier, TrulyInbox.
MailRush.io Integrations
MailRush.io connects with: SMTP, IMAP, Zapier, Webhooks.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by Mailarrow: Gmail, Outlook, Zoho, TrulyInbox.
Integrations listed only by MailRush.io: SMTP, IMAP, Webhooks.
Use Case Recommendations
Best Fit for Mailarrow
- Budget-conscious teams looking for an affordable cold email platform
- Organizations with complex tech stacks needing broad integration support (5 integrations)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Best Fit for MailRush.io
- Budget-conscious teams looking for an affordable cold email platform
- Teams that need a wide feature set (11 capabilities listed)
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Feature Comparison Summary
| Feature | Mailarrow | MailRush.io |
|---|---|---|
| Starting Price | $39/mo | $19/mo |
| Top Tier Price | $99/mo | $99/mo |
| Total Features Listed | 10 | 11 |
| Integrations | 5 | 4 |
Getting Started Checklist
- Define your cold email outreach requirements and monthly budget
- Estimate your expected email sending volume to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Mailarrow and MailRush.io both serve the cold email outreach market. MailRush.io offers a more accessible entry point at $19/mo, while Mailarrow starts at $39/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit Mailarrow and MailRush.io for current information.
Frequently asked questions.
Frequently asked questions- Which is cheaper, Mailarrow or MailRush.io?
- MailRush.io has the lower entry price at $19/mo compared to Mailarrow's $39/mo starting plan. Both platforms have a top-tier plan priced at $99/mo, so the price gap narrows at higher usage levels.
- What integrations does Mailarrow support?
- Mailarrow connects with Gmail, Outlook, Zoho, Zapier, and TrulyInbox, totaling 5 integrations. Of these, Gmail, Outlook, Zoho, and TrulyInbox are listed only by Mailarrow, while Zapier is shared with MailRush.io.
- What integrations does MailRush.io support?
- MailRush.io connects with SMTP, IMAP, Zapier, and Webhooks, totaling 4 integrations. SMTP, IMAP, and Webhooks are listed only by MailRush.io, while Zapier is shared with Mailarrow.
- Does Mailarrow or MailRush.io offer more features?
- MailRush.io lists 11 features compared to Mailarrow's 10. Mailarrow's list includes AI personalization and sending mailbox rotation, while MailRush.io's list includes email validation, spam assessment, and unsubscription automation.
- Who should use Mailarrow versus MailRush.io?
- Mailarrow suits budget-conscious teams and organizations with complex tech stacks needing broad integration support across 5 integrations. MailRush.io suits budget-conscious teams and teams that need a wide feature set with 11 capabilities listed. Both suit sales teams running high-volume outbound campaigns and agencies managing multiple client outreach programs.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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